camera_online_server - this will take a image from C328 serial camera an…

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Mitesh Patel / Mbed 2 deprecated camera_online_server

this will take a image from C328 serial camera and store those images in mbed flash as html and this html page is uploaded into the server at ip:192.168.1.2

Dependencies: mbed

lwip/HTTPServer/HTTPFS.h@0:e1a0471e5ffb, 2010-12-15 (annotated)

Committer:: mitesh2patel
Date:: Wed Dec 15 15:01:56 2010 +0000
Revision:: 0:e1a0471e5ffb

Who changed what in which revision?

User	Revision	Line number	New contents of line
mitesh2patel	0:e1a0471e5ffb	1	#ifndef HTTPFILESYSTEM_H
mitesh2patel	0:e1a0471e5ffb	2	#define HTTPFILESYSTEM_H
mitesh2patel	0:e1a0471e5ffb	3
mitesh2patel	0:e1a0471e5ffb	4	#include "mbed.h"
mitesh2patel	0:e1a0471e5ffb	5
mitesh2patel	0:e1a0471e5ffb	6	#include "HTTPServer.h"
mitesh2patel	0:e1a0471e5ffb	7
mitesh2patel	0:e1a0471e5ffb	8	#define HTTP_BUFFER_SIZE 700
mitesh2patel	0:e1a0471e5ffb	9	#define FILENAMELANGTH 100
mitesh2patel	0:e1a0471e5ffb	10
mitesh2patel	0:e1a0471e5ffb	11	/**
mitesh2patel	0:e1a0471e5ffb	12	* This class will store the data which are required for an request.
mitesh2patel	0:e1a0471e5ffb	13	* We are not in every case able to return all data at once, that means we have to store
mitesh2patel	0:e1a0471e5ffb	14	* the actual level of transmission.
mitesh2patel	0:e1a0471e5ffb	15	*/
mitesh2patel	0:e1a0471e5ffb	16	class HTTPFileSystemData : public HTTPData {
mitesh2patel	0:e1a0471e5ffb	17	public:
mitesh2patel	0:e1a0471e5ffb	18	int fleft;
mitesh2patel	0:e1a0471e5ffb	19	int bleft;
mitesh2patel	0:e1a0471e5ffb	20	int offset;
mitesh2patel	0:e1a0471e5ffb	21	FILE *file;
mitesh2patel	0:e1a0471e5ffb	22	char buffer[HTTP_BUFFER_SIZE];
mitesh2patel	0:e1a0471e5ffb	23
mitesh2patel	0:e1a0471e5ffb	24	virtual ~HTTPFileSystemData() {
mitesh2patel	0:e1a0471e5ffb	25	if(file) {
mitesh2patel	0:e1a0471e5ffb	26	fclose(file);
mitesh2patel	0:e1a0471e5ffb	27	file = 0;
mitesh2patel	0:e1a0471e5ffb	28	}
mitesh2patel	0:e1a0471e5ffb	29	}
mitesh2patel	0:e1a0471e5ffb	30	};
mitesh2patel	0:e1a0471e5ffb	31
mitesh2patel	0:e1a0471e5ffb	32	/**
mitesh2patel	0:e1a0471e5ffb	33	* This class will deliver files form the virtual file system.
mitesh2patel	0:e1a0471e5ffb	34	* Furthermore it is a simple example how to implement an HTTPHandler for big data requests.
mitesh2patel	0:e1a0471e5ffb	35	*/
mitesh2patel	0:e1a0471e5ffb	36	class HTTPFileSystemHandler : public HTTPHandler {
mitesh2patel	0:e1a0471e5ffb	37	public:
mitesh2patel	0:e1a0471e5ffb	38	/**
mitesh2patel	0:e1a0471e5ffb	39	* Create a new HTTPFileSzstemHandler.
mitesh2patel	0:e1a0471e5ffb	40	* @param prefix The Prefix is the URL Proefix in witch the Handler will work.
mitesh2patel	0:e1a0471e5ffb	41	* @param dir The Prefix will be directly mappt on the dir.
mitesh2patel	0:e1a0471e5ffb	42	*/
mitesh2patel	0:e1a0471e5ffb	43	HTTPFileSystemHandler(const char path, const char dir) : HTTPHandler(path), _dir(dir) {}
mitesh2patel	0:e1a0471e5ffb	44	HTTPFileSystemHandler(HTTPServer server, const char path, const char *dir) : HTTPHandler(path), _dir(dir) { server->addHandler(this); }
mitesh2patel	0:e1a0471e5ffb	45
mitesh2patel	0:e1a0471e5ffb	46	private:
mitesh2patel	0:e1a0471e5ffb	47	/**
mitesh2patel	0:e1a0471e5ffb	48	* Check if a requested file exists.
mitesh2patel	0:e1a0471e5ffb	49	* If it exists open it and store the data back in the HTTPConnection.
mitesh2patel	0:e1a0471e5ffb	50	* We would not store connection specific data into the Handler.
mitesh2patel	0:e1a0471e5ffb	51	* If the file exists and we cann serve a page return HTTP_OK else HTTP_NotFound.
mitesh2patel	0:e1a0471e5ffb	52	* @param con The Connection which will be handled.
mitesh2patel	0:e1a0471e5ffb	53	*/
mitesh2patel	0:e1a0471e5ffb	54	virtual HTTPStatus init(HTTPConnection *con) const {
mitesh2patel	0:e1a0471e5ffb	55	char filename[FILENAMELANGTH];
mitesh2patel	0:e1a0471e5ffb	56	HTTPFileSystemData *data = new HTTPFileSystemData();
mitesh2patel	0:e1a0471e5ffb	57	snprintf(filename, FILENAMELANGTH, "%s%s\0", _dir, con->getURL() + strlen(_prefix));
mitesh2patel	0:e1a0471e5ffb	58	data->file = fopen(filename, "r");
mitesh2patel	0:e1a0471e5ffb	59	if(!data->file) {
mitesh2patel	0:e1a0471e5ffb	60	delete data;
mitesh2patel	0:e1a0471e5ffb	61	return HTTP_NotFound;
mitesh2patel	0:e1a0471e5ffb	62	}
mitesh2patel	0:e1a0471e5ffb	63	data->fleft = fleft(data->file);
mitesh2patel	0:e1a0471e5ffb	64	data->bleft = 0;
mitesh2patel	0:e1a0471e5ffb	65	data->offset = 0;
mitesh2patel	0:e1a0471e5ffb	66
mitesh2patel	0:e1a0471e5ffb	67	con->data = data;
mitesh2patel	0:e1a0471e5ffb	68	con->setLength(data->fleft);
mitesh2patel	0:e1a0471e5ffb	69	loadFromFile(con);
mitesh2patel	0:e1a0471e5ffb	70	return HTTP_OK;
mitesh2patel	0:e1a0471e5ffb	71	}
mitesh2patel	0:e1a0471e5ffb	72
mitesh2patel	0:e1a0471e5ffb	73	/**
mitesh2patel	0:e1a0471e5ffb	74	* Send the maximum available data chunk to the Client.
mitesh2patel	0:e1a0471e5ffb	75	* If it is the last chunk close connection by returning HTTP_SuccessEnded
mitesh2patel	0:e1a0471e5ffb	76	* @param con The connection to handle
mitesh2patel	0:e1a0471e5ffb	77	* @param maximum The maximal available sendbuffer size.
mitesh2patel	0:e1a0471e5ffb	78	* @return HTTP_Success when mor data is available or HTTP_SuccessEnded when the file is complete.
mitesh2patel	0:e1a0471e5ffb	79	*/
mitesh2patel	0:e1a0471e5ffb	80	virtual HTTPHandle send(HTTPConnection *con, int maximum) const {
mitesh2patel	0:e1a0471e5ffb	81	HTTPFileSystemData data = static_cast<HTTPFileSystemData >(con->data);
mitesh2patel	0:e1a0471e5ffb	82	err_t err;
mitesh2patel	0:e1a0471e5ffb	83	u16_t len = min(data->bleft, maximum);
mitesh2patel	0:e1a0471e5ffb	84	// printf("Send File\n");
mitesh2patel	0:e1a0471e5ffb	85	if(len) {
mitesh2patel	0:e1a0471e5ffb	86	do {
mitesh2patel	0:e1a0471e5ffb	87	err = con->write(
mitesh2patel	0:e1a0471e5ffb	88	&data->buffer[data->offset], len, (((!data->fleft)&&(data->bleft==len))?
mitesh2patel	0:e1a0471e5ffb	89	(TCP_WRITE_FLAG_COPY \| TCP_WRITE_FLAG_MORE) : (TCP_WRITE_FLAG_COPY)));
mitesh2patel	0:e1a0471e5ffb	90	if(err == ERR_MEM) {
mitesh2patel	0:e1a0471e5ffb	91	len /= 2;
mitesh2patel	0:e1a0471e5ffb	92	}
mitesh2patel	0:e1a0471e5ffb	93	} while (err == ERR_MEM && len > 1);
mitesh2patel	0:e1a0471e5ffb	94
mitesh2patel	0:e1a0471e5ffb	95	if(err == ERR_OK) {
mitesh2patel	0:e1a0471e5ffb	96	data->offset += len;
mitesh2patel	0:e1a0471e5ffb	97	data->bleft -= len;
mitesh2patel	0:e1a0471e5ffb	98	}
mitesh2patel	0:e1a0471e5ffb	99	}
mitesh2patel	0:e1a0471e5ffb	100	return loadFromFile(con);
mitesh2patel	0:e1a0471e5ffb	101	}
mitesh2patel	0:e1a0471e5ffb	102
mitesh2patel	0:e1a0471e5ffb	103	/**
mitesh2patel	0:e1a0471e5ffb	104	* Returns the left size of a file.
mitesh2patel	0:e1a0471e5ffb	105	* @param fd The filehandler of which we want to know the filesize.
mitesh2patel	0:e1a0471e5ffb	106	* @return The filesize of fd.
mitesh2patel	0:e1a0471e5ffb	107	*/
mitesh2patel	0:e1a0471e5ffb	108	long fleft(FILE *fd) const {
mitesh2patel	0:e1a0471e5ffb	109	long len, cur;
mitesh2patel	0:e1a0471e5ffb	110	cur = ftell(fd);
mitesh2patel	0:e1a0471e5ffb	111	fseek(fd, 0, SEEK_END);
mitesh2patel	0:e1a0471e5ffb	112	len = ftell(fd);
mitesh2patel	0:e1a0471e5ffb	113	fseek(fd, cur, SEEK_SET);
mitesh2patel	0:e1a0471e5ffb	114	return len;
mitesh2patel	0:e1a0471e5ffb	115	}
mitesh2patel	0:e1a0471e5ffb	116
mitesh2patel	0:e1a0471e5ffb	117	/**
mitesh2patel	0:e1a0471e5ffb	118	* Fill the buffer if the buffer is empty.
mitesh2patel	0:e1a0471e5ffb	119	* If the file is complete close the filehandler and return HTTP_SuccessEnded.
mitesh2patel	0:e1a0471e5ffb	120	*/
mitesh2patel	0:e1a0471e5ffb	121	HTTPHandle loadFromFile(HTTPConnection *con) const {
mitesh2patel	0:e1a0471e5ffb	122	HTTPFileSystemData data = static_cast<HTTPFileSystemData >(con->data);
mitesh2patel	0:e1a0471e5ffb	123	if(!data->bleft) {
mitesh2patel	0:e1a0471e5ffb	124	if(data->fleft) {
mitesh2patel	0:e1a0471e5ffb	125	int len = fread(&data->buffer[0], sizeof(char), HTTP_BUFFER_SIZE, data->file);
mitesh2patel	0:e1a0471e5ffb	126	data->fleft -= len;
mitesh2patel	0:e1a0471e5ffb	127	data->bleft = len;
mitesh2patel	0:e1a0471e5ffb	128	data->offset = 0;
mitesh2patel	0:e1a0471e5ffb	129	} else {
mitesh2patel	0:e1a0471e5ffb	130	if(data->file) {
mitesh2patel	0:e1a0471e5ffb	131	fclose(data->file);
mitesh2patel	0:e1a0471e5ffb	132	data->file = 0;
mitesh2patel	0:e1a0471e5ffb	133	}
mitesh2patel	0:e1a0471e5ffb	134	return HTTP_SuccessEnded;
mitesh2patel	0:e1a0471e5ffb	135	}
mitesh2patel	0:e1a0471e5ffb	136	}
mitesh2patel	0:e1a0471e5ffb	137	return HTTP_Success;
mitesh2patel	0:e1a0471e5ffb	138	}
mitesh2patel	0:e1a0471e5ffb	139
mitesh2patel	0:e1a0471e5ffb	140	/** The Directory which will replace the prefix of the URL */
mitesh2patel	0:e1a0471e5ffb	141	const char *_dir;
mitesh2patel	0:e1a0471e5ffb	142	};
mitesh2patel	0:e1a0471e5ffb	143
mitesh2patel	0:e1a0471e5ffb	144	#endif

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	15 Dec 2010
Imports:	21
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

lwip/HTTPServer/HTTPFS.h@0:e1a0471e5ffb, 2010-12-15 (annotated)

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